temperatures dropping to the mid and upper 50s by 7:00. for tuesday, wednesday and thursday, mainly dry tomorrow. best chance of showers over the ocean, cold morning on wednesday and then the billing storm comes in for thursday. if you are headed to the sierra this morning, chains are required on 50, 80 and 88. so bring those and make sure you are handy. bay bridge toll plaza, breezy conditions, light traffic but it is very wet out. no delays on the upper deck. first look at san mateo bridge, light traffic headed in the westbound direction headed toward foster city. no delays here but windy conditions on all the spans this morning. a look at drive times, some of the busier commute still pretty good over the altamont pass through livermore. antioch, highway 4 at the limit and 80 into the macarthur maze just under 20 minutes.